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Montessori mathematics - Constructive Blue Triangles

Montessori mathematics - Constructive Blue Triangles

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Item includes a box with lid contains 12 right-angled scalene triangles.

1. The box of Constructive Blue Triangles is used in the elementary Montessori classroom to explore equivalency, congruency and similarity.

Last Updated: 12 Mar 2026 14:00:40 PDT

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